Chapter 1562

"What? I'm repairing the elevator," the worker lowered his safety helmet and said.

"But the elevator isn't broken, why are you fixing it? It's been running smoothly," Serena replied.

"Someone called me yesterday, and said there were jerks during operation, significant vibrations, so I came to check," the worker explained.

"Okay, go ahead, then." Serena nodded, not paying much attention to him.

When the elevator arrived, Serena stepped out.

Once Serena had left the elevator, the worker's face under the safety helmet was revealed. It was a disfigured face, eyes filled with malice and madness.

He adjusted his toolbox, unzipped it, and began assembling something from inside.

Half an hour later, he emerged from the elevator and smirked at the surveillance camera, revealing his zombie-like face.

Instead of leaving, he headed toward a room.

By the time the worker in blue emerged, it was already 4 PM, which meant he had been inside for six hours.

The worker didn't leave immediately.